Valve for steam-pumps



is the steam-chest on top of the steam-cylin- L L, secured thereon.

UNITED STATES PATENT OEFioE.

MANUELF. DE SOUZA, OF SPRINGFIELD, ILLINOIS.

VALVE FOR STEAM-PUM PS.

SPECIFICATION forming part of Letters Patent No. 225,575, dated March16, 1880.

Application filed December 17, 1879.

To all whom it may concern:

Be it known that l, MANUEL F. DE SOUZA, of Springfield, in the county ofSangamon and State of Illinois, have invented certain new and usefulImprovements in Valves for SteamPumps; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, referencebeing had to the accompanying drawings, and to the letters of referencemarked thereon, which form part of this specification.

My invention relates to steam-pumps; and it consists in the peculiarconstruction and an rangeinent of the steam chest and valve as will behereinafter more fully pointed out, and set forth in the claim.

In order to enable others skilled in the art to which my inventionappertains to make and use the same, I will now proceed to describe itsconstruction and operation, referring to the annexed drawings, in which-Figure 1 is a side elevation Fig. 2, a central vertical section, showingthe exhaustports in dotted lines; and Figs. 3 and 4 are details of partsof my invention.

A represents the steam-cylinder. B is the water-cylinder, withair-chamber O on top. E

der A, with steam-inlet pipe D and an exhaust, F, on each side.

On each side of the water-cylinder B are discharge-opening Gr andsuction-opening H for the water.

I is the bed of the machine. K is the piston-rod, on which is securedthe shipper J, working on the valve-rod M, between tappets On thevalve-rod M, within the steam-chest, is the steam-valve, whichconsistsof a hollow sleeve, 0, with four cylindrical parts or rings, 0 O 0 Ofitting the bore of the steam-chest, and all made in one piece, thevalve being movable on the rod. At each end of this movable valve isfastened an auxiliary valve on the rod, said valves being marked R R,and are at such distances apart as to admit of a certain movement of themovable valve.

Leading from the steam-chest E are ports Y Y into the cylinder, and inthe under face i of the steam-chest is a channel, W W, with a centralpassage, V, leading from steam-chest and end passages, 00 00, into thechest, back of valves It B.

Steam enters through the pipes D into the chest and into the spacebetween the parts 0 O of the movable valve, as seen in Fig. 2, andpasses from the interior, through the passage or port V and groove W,through the port as, back into the chest,between the auxiliary valve Rand the chest-head. It then passes through holes 1) in said auxiliaryvalves to the space r, between It and part 0, holding the entire movablevalve as far to the left as the stop-pin a, projecting through hole I),will permit, leaving a space between 0 and R, to permit the valve-rod,with the valves RR, to be moved to the right under the shipper J, anduncover the port so, and allow steam to enter from the channel W,between the auxil- 7o iary valve R and the chest-head, and to passthrough .the holes in said valve and shift the movable valve to theright.

The shipper reversing moves the valve'rod and auxiliary valves,uncovering the port :20, and closing 00, and so continues.

The auxiliary valves RR are counterbored on their faces to allow thesteam, after passing through the holes 1), to expand and act on thewhole face of the movable valve.

While steam is passing along the groove W, through port as, it is alsopassing from the center space through the port Y, on the left,

to the steam-cylinder, and, moving the piston to the right, exhauststhrough the port 8 5 Y and exhaust-ports into the space between theparts 0 and O and into either exhaustopening F, as may be convenient.Then, when the piston-head is at the end of its stroketo the right theshipper has moved the valverod 0 M and auxiliary valves R It to theright, letting steam through the port 00, to work the valve, as abovestated.

Having thus fully described my invention, what I claim, and desire tosecure by Letters 5 Patent, is-- In a steam-pump, the valve-rod M,having attached valves R B, with holes p p and cir cular spaces a" a",and movable valve 0, having In testimony that I claim the foi'egoing asrings 0 O O 0 in combination with steammy own I affix my signature inpresence of chest E, provided with stop-pin a, and chantwo Witnesses.

nel W W, with central passage, V, and end MANUEL F. DE SOUZA. passages,.00 so, all constructed and arranged Witnesses: to operate in the mannerand for the purpose CLINTON L. OONKLING,

set forth. GEORGE BARRELL.

